Brush for scrubbing machines



June 2, 1931, A. A. HARTMAN BRUSH FOR SCRUBBING MACHINES 2 Sheets-Sheet 2 Filed March 25, 1929 A A- artmafl mvzuToa ATTOR NEY Patented June 2, 1931 UNITED STATES ANTHONY A. HARTMAN, F NIAGARA FALLS, NEW YORK BRUSH FOR SGRUBBING MACHINES Application filed March 25, 1929. Serial No. 349,757.

which are so arranged and constructed that a floor or articles can be thoroughly cleaned with the minimum amount of fluid and with the minimum amount of labor.

Another object of the invention is to so arrange the-conduit for connecting the feed pipe with the brush head that the said conduit will not interfere with the rotary action of the'parts.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts. to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed .out in the appended 0 am.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a sectional view showing the invention in use with a certain type of rotary machine.

Figure 2 is a sectional view of the brush.

Figure 3 is a bottom plan view, with parts removed and parts in section.

Figure 4 is a similar view, but showing a modified form of brush.

In these views, the brush head A is formed on its under face with the openings 1 to receive the bristles 2, the bristles being suitably fastened in the openings, such as by means of the wires 3, shown in Figure 2. The central part of the head is formed with a chamber 4 opening out through the lower face of the head and the lower end of the opening is covered by a plate 5 which is detachably secured to the head. If desired, this plate may be formed with perforations, so that some of the solution can pass through the plate upon the article being cleaned. The head is provided with a plurality of channels 7 which may be radially arranged, as shown in Figure 3, or tangentially arranged, as shown at 7 in Figure 4. The lower face of the brush is formed with the perforations 8 which communicate with the channels, so that the solution passing into the channels will pass from the head through the perforations and thus come in contact with the bristles. The inner ends of the channels communicate with the chamber 4 and their outer ends are closed by the plugs 10.

A pipe 11 extends through the central portion of the top of the head into the chamber and a packing gland 12 surrounds the lower end of the pipe so as to permit rotary, movement of the head on the pipe without leakage. This pipe 11 can be connected with the supply pipe in any suitable manner, though Figure 1 shows this pipe connected with a supply pipe 13 by an elbow 14. This'figure also shows the central enlargement at the upper part of the brush head connected with the member 15 which is bolted to the gear 16 through which the brush is rotated from the motor M by the gears 17 and the pinion 1 8 which meshes with the gear 16. a

From the foregoing it will be seen that I have provided a brush for a rotary scrubbing machine in which the fluid can be supplied to the chamber without interfering with the rotary parts and the fluid is supplied to the brushes in such a manner that a minimum amount of fluid is used and the articles can be cleaned, polished, etc., with the minimum amount of time and labor. 7 v

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within th scope of the appended claim. What I claim is:-

A brush for scrubbing machines comprising, a circular-shaped head having a centrally arranged ofl'set portion projecting from one face of said head to provide a gear seat and a ournal to be engaged by a support, said head having'a centrally arranged fluid receivin chamber extending into the offset portion and opening through the opposite face of the head from said ofi'set portion, a removable closure plate overlying the chamber and radially extending passe s in the head in communication with the c amber and opening outwardly v through the last named face of the head at a pluralitg of points between the peripheries of the hea a plate, and tufts of bristles secured to the head between said peripheries of a the plate and head.

In testimon whereof I aflix my si ature.

THONY A. HART 

